merrill



E. R. MERRILL.

v MINING MACHINE AND TRUCK.

APPLICATION FILED SEPT. T2. 1910. nENEwED sEPT.1B.|91a. 1,142,348.

Kw 1 9 1 om. m u T. n m D1 E. R. MERRILL.

MINING MACHINE AND TRUCK.

APPLICATION FILED SEPT. I2, 1910. REIIEWED'SEPT. 1B. 1913.

Patented June 8, 1915.

2 SHEETS-SHEET 2.

JMW

wfmea eig; v ML,

UNITED STATES yrnfinnr-joi'lnon.)

EDWIN R. MERRILL, OF COLUMB'S, OHIO, ASSIGNOR TO THE JEFFREY MANUFAC-TUBINGv COMPANY, OF COLUMBUS, OHIO, A CORPORATION OHIO.

MINING MACHINE AND TRUCK.

Specification of Letters Patent.

Patented J une 8, 1915.

Application led September 12, 1910, Serial No. 581,489. RenewedSeptember 18, 1913. Serial No. 790,564.

To all fr0/,wm it may concern:

Be it known that I, EDWIN R. Mnnnrnma citizen of the United States,resldmg at Columbus,.'in the county of Franklin and State of Ohio,"haveinvented certain new and useful Improvements in Mining 'Machines andvTrucks, of which the following 1s a specification, reference being hadtherein to the accompanyin 'drawing The principal obJect ofthe inventionis to provide in a mining machine and truck animproved arrangement ofcontrollingl and power-transmitting elementspreferably located on thetruck, and adapted for drivf ing or retarding the truck .Wheels and thecable reel with which the truck is provided. vOther objects will beapparent from the following specification.

1 In order to make the invention clearly understood a practicalembodiment of the same is. shown in the accompanying draw-v ings, thatform ofthe invention being chosen for illustration which is deemed themost In the said drawings Figure 1 is a plan view of ,a miningmachine'and .truck embodying the invention, some of the forward portions of themachineand truck being broken away or omitted as not necessary to' anunderstanding of the invention. 'F ig. 2 is a side view 4of the same.Fig. 3 is a rear end View of the mining machine. Fig. 4

is a vertical cross section Aof the mining,

machine on line' 4 4v of Fig. 2,' -certain of the parts being shown 1nrear elevation.

lfig. 5 is a vertical sectional view of the multiple disk frictionclutch, and neighboring parts, on line 5 5, Fig. 2. Fig 6 is a plan viewof the same, partly inVV section.

' Inv the dra-Wings I have shown a mining machine of the breast type,but it will be understood `that so far as the essential fea- ,tures ofmy invention are concerned the exact form of mining machine isimmaterial. The machine shown has a frame comprising two parallel sidechannel bars 2 out to the desired shape. The bars 2 are connected witheach other at the rear of the machine 'by a cross-frame '5 fitting inthe channels,

at the frontend by a cross-bar 6, and at intermediate points by one ormore' crossplates 7 arranged near the bottom of the frame out of the Wayof the carriage.-

10 is a carriage comprising a front cross bar ll and rearward lextendingside bars l2,

12.- The carriage is provided-with rollers 13 which run on the tops ofthe'main side bars 2. A

` 14 is an electric motor which isfmounted 4on the carriage and theframe of which serves -to connect the side bars 12 attheir ment of thecarriage away from the frame.

Connected to th'e carriage for movement therewith isa cutter frame 17havin allongitudinal' guide bar 18 which slida ly env.

gages with suitable guides formed on the cross-member 6 of the Amainframe. The cutterframe is adapted to support and guide a cutter chain ofthe usual type which, for the sake of simplicity, has been omitted fromthe drawings. The cutter chain is driven by means of thesprocket Wheel25 which will be again referred to.

Fixed on the front end of the armature shaft ofthe motor 14 i's a bevelpinion 20 which meshes with a bevel gear 21 on a verticalshaft 23. Theshaft 23 carries the sprocket wheel 25 above referred to and, thissprocket Wheel can therefore be driven bythe motor through the gearingwhich has been described. Preferably a clutch is provided for connectingor disconnecting the gear wheel y21 with the shaft 23. clutch isindicated at 27 in Figs. 3 and 4.

'. It can be operated by means of the handlever 33. l

38 is a transverse feed shaft mounted on the carriage. It carries aworm-wheel 37 which 'meshes With a yworm 36 on the ver-v tical shaft 23.Slidablysplined on the shaft 38 are driving clutch members 40 and 41,.and for shifting these membersI thereis provided a yoke 42 operable by ahandlever 43.

45 and 46 are driven clutch members on the' shaft 38 and are adaptedrespectively to mesh with the members 40 and 41. The clutch members 45and 46 are connected respectively'with gear wheels 47 and 52. The gearWheel 47 meshes directly vwith a gear wheel 48 on the transverseshaft49. 'lhe -gen1 Wheel 52 meshes with an idler p1n1on 53, which in turnmeshes with a4 gear wheel 54 on the shaft 49. At the ends ofthe shaft 49are pinions 51, 51, mounted to mesh respectively with-racks 51a, 51,lsecured to the main frame membersl 2. LVVhen the hand-lever 43 is movedin one direction power will be transmitted through the gears 47 and 48to rotate vthe pinions 51, 51, in

4the direction to force the carriage and cutter frame forward withrespect to the machine frame. When the hand-lever 43 is thrown in theother direction, power will be transmitted through the gears 52, 53

and 54 to cause the carriage and cutter frame to be moved in theopposite direction. The yoke 42' can be moved automatically by means ofthe link 59 and the bellcrank 61. One arm of this bell-crank is adaptedto enga-ge the stops 62 and 63 on the main frame when the carriagereaches its limit of movement in one direction or the other..

66 indicatesy the frame of the so-called selfepropelling truck, which isemployed for the transportation of the lniningmachine, which truck ispropelled by power derived, through suitable connections, from theniining machine motor.

67 is a transverse shaft mounted in bearings 68 on the truck frame 66,and 6 9 is a sprocket fixed on the shaft 67 and connected by a chain 69with the ground or supporting wheels 69" of the truck to propel the 74is a worm on a longitudinal shaft 75V and above and meshing with theworm wheel 70. It is contained within the box 72 and the shaft 75 ismounted in bearings 76 on the latter.

77 sl a piniclutch, the two members of which are fixed rspectively onthe front end of the Worm shaftl 7 5 and on the rear end of the armaturelshaft 19, these two clutch members being brought into mutual engagementin a known manner as and when the p mining machine is loaded onto thetruck.

` 'by the hand wheel 73` and the friction ABy `the arrangement describedthe controller or starting boX of the mining machine motor can be throwntothe full on positionand the speed of the truck varied clutch 71.Mounted on the rear end ofthev truck is a cable reel 78 adapted to windup the cable, which carries the electric current' tothe motor,automaticallyras the truck and mining machine thereon come out of theroom. On tliehub of the' reel 7 -8 is a sheave 'wheel `lylcon'nectedwith a lsheavefBl), which is loose on the clutch shaft 67, byv a hemprope 81. 82 is a clutch for connecting `the sheave 80 with its shaft.The shape of the grooves in the sheaves is such that should the tensionon the cable become too great the rope 81 will slip on the sheave SO.There is thus provided a slipping, yielding or frictional take-up forthe cable.

4The friction clutch 71 comprises a set of annular plates 83 which arenotched on their peripheries, the said notches engaging ribs 84 attachedto or cast with the worm wheel to cause the plates 83 and worm wheel torotate together; and a set of annular plates S5 alternating with theplates 83 and interiorly notched to engage ribs 86 on the shaft 67. AThetwo sets of plates are longitudinally loose except when more or lessclamped together by the hand wheel 73. The clutch plates are connedbetween the body'of the worm wheel and a movable collar 87, and theAsaid confining parts are held between .two sets of ball bearings 8S and89. The ball bearings 89 are arranged betweenthe worm wheel and a partof the frame 66, and

the ball bearings 88 are between the 'collar 87 and the hand wheel 73.Then the latter is forced against the ball bearing elements slippageaccording to the pressure of the hand wheel 73. The hand wheel is fixedon a screw threaded sleeve 90 mounted on the shaft 67, and the sleeve 90is screwed within a sleeve 91 fixed in a part of the frame 66.Consequently the turning of the hand wheel imparts endwise movement toitself'to compress or release vthe friction elements of the clutch 71.

It will be observed that the upper surfaces' of the parallellongitudinally arranged side bars or supporting rails of the truck frame66 are smooth and are unobstructed when the mining machine is not inplace. This construction and arrangement make it possible for the miningmachine to be readily slid along the rails into or out of the positionin-which it is shown in Figs. 1 and 2 of the drawings. The powerreceiving element of the truck (in this case the clutch member at theforward end of the shaft 19) is exposed on the side toward the 'spacereserved for the mining machine, thus making it possible for the miningmachine to engage -the said element when the mr chine is moved intoposition. .f j

It will be clear that the worm and worm wheel constitute anon-overhauling power transmitting mechanism, that is, power can betransmitted in one direction from the Worm I to rotate the worm "Wheel,but power cannot be transmitted in the other direction from the wormwheel to rotatethe worm. The provision of this. non-overhau'ling adaptsthe frietionl clutch 7 1 to antomatically act as a brake for the trackwheels. When power is being applied at the clutch 77' it is transmittedthroughA the worm and the'fworm wheel andv the friction clutch to thesprocket Wheel 69 and to the Wheels. -But wheels'. It willbe seen thatinthis way I have' provided means for transmittin power it'pp`lyinglafrietional resistance to the rota the". truckwheels, the Worm servingvwhen vthe inoto'r is idle to4 lock one of the elements tion of theWheels when the clutch is not driven.

I am awarevthat it has heretofore been 1 the s aidj'elementis lnotdriven bythe motor.

proposed to provide* for a. mining machine 'truck-of the typfe hereinshown a cable .reel

connect'ed to `be .drivensi'multaneously with the.' vtruck Wheels. i donot,` therefore, broadly claim such a' cable reel and its connections asal vpartofthis invention. How'- vever, I believe myself to have been thevfirst toprovi'd'e inan apparatus of this character,

aA manually controllable friction 'clutch Abetransm'is'sion -of power'from the motor to the Wheelszand reel', but also, in combination withthe;worm and worm wheel, serves as a brake to resist rotation of thewheels and reel When-the motoris idle.

lVha-t I claim is vl. In a mining machine and trucktherelfo r, thecombination of a wheeled truck, a .mining machine mountedon the truckbut adapted to be readily removed therefrom, and a train of powertransmitting elements between the motor of the mining machine and thetruck Wheels comprising two. elements adapted to be connected or.discon- Lneeted -by the bodily movement of the machine as a Whole on thetruck and a manually operable clutch supplemental to the said twovelements. l

2; lIn a mining machine and truck therefor, the combination of a wheeledtruck, a

. miningmachine mounted on the truck' but adapted to be readily removedtherefrom, andA a. power transmitting mechanism between the motor ofthemin-ing machine and the truck wheels comprising two independ entlymovable frictionally engaging elements and two other elements adapted tobe 'connected or disconnected by the bodily movement of the machine as awhole on the truck.

3. In a mining machine and truck therefor.- the combination of a wheeledtruck, a

eltruck Wlee s when Ween the minin machine and 'the' truck his clutchnot only serves ;as""a'means for manually controlling-j the miningmachinezmounted on'the itrcl"but adapted `to..be readily removedtliererom, and means for transmitting power from the motor of the miningmachine truck Wheels when the .said motorii'sA energized and forautomatically applying azhictional re-l:`

sistance to the rotation of the the -n'otor 'is net energi'zed.

'adapted' .to ..b e. readily removed thereiirom, and a separable' power,transmittlng mechanism` between' the motor of the minin ofthe frictionclutch against rotation when .b InA ajminin'g machine andtruck'therefor, the lcombination of 'awheeled truck, ca mining machinemounted 'on the trucli but. adaptedtobereadily removed therefroim aseparable power: transmitting mechanism betweenthe motorof the minlngmachine and the wheels 4vof 'the truck comprising a worinconnected with"the motor, a Worm wheel" meshing With-:the worm and a friction clutchvbc-ztvveen `the WormA Wheel and the vtruck wheels, the worm servingwhen the motor Ais idle to lock one of the elements vof the fri@ v tionclutch against' rotationl when the vsaid element is not driven by themotor, and

the cable to the motor of thc mining ma' chine, and a separable powertransmitting mechanism interposed between the Said motoren the one handand the'truck wheels ma. chine-and the wheels of the truck compris-i ing-'a Worm connected with-"the motor-, a ""'wo'r i' lli and reel on theother` hand comprising a .A

manually operable clutch.v

7. In a mining mach-ine and truck therefor, the combination of a wheeledtruck, an

electric mining machine mounted on' the .truck Abut adapted to 'bereadily removed therefrom, a rotatable cable reel on the truck,-

an electric conductor cable on the reel, means fcrtransmitting currentfrom the cable to the motor of the mining machine, and a separablemechanisnr interposed between the `said motor on the one hand and thetruck wheels and reel on the other hand for transmi tting power from themotor to the wheels `and reel or forapplying amanuglly regulagenergizedand foi' automatically applfying ble resistance to the rotation of thewheels and reel.

8. In a mining machine and truck therefor, the combination of a wheeledtruck, an

5 electric mining machine mounted on the truck but adapted to be readilyremoved therefrom, a rotatable cable reel on the truck, lan electric!conductor cable on the reel, means for transmitting -current from the v'cable to the motor of the miningmachine,

and a separable mechanism for transmitting power from the said motor tothe truck wheels and `reel when the motor is energized and forautomatically applying a frictional resistance to the rotation of thewheels and reelv when the motor is not energized. 4

9. Iii' a mining machine and truck, the

combination of a wheeled truck, cutter-carrying-mechanism on the truck,a motor,

' power transmitting mechanism between the motor andthejfcutter-carrying mechanism comprising 'a manually operableclutch,and

means for transmittinglpower from the motor to the Vtruck!gheels whenthe motor is a frictional resistance tothe rotation the wheels when themotor is not energized.

10.V In a mining-machine and truck, the combination of a wheeled truck,cutter-carrying mechanism on the truck, an electric *motor owertransmitting mechanism between t e motor and the cutter-carryingmechanism comprisi-n a manually controllable clutch, a rotata le cablereel on the truck, an electric conductor cable on the reel, means fortransmitting current `from the cable to the motor, and means fortransmitting power from-the motor to the truck wheels and reel when themotor is energized 4and for automatically applying a 'frictionalresistance'to the rotation of the wheels and rcel when the motor isnotenergized.

1l. In a mining machine truck, the combination of a low frame havinglongitudinally A4,5 arranged mining machine supports with their uppersurfaces unobstructed, supporting wheels for the frame, an exposed powerreceiving element on the frame'adjacent the said mining machinesupports, and atrain of power transmittingr elements between the ingmachine'supports.

n .In a mining machine truck, the cornblnation cfa low frame havinglongitudinally arranged mining machine supports withtheir upper surfacesunobstructed, supporting wheels for the frame, an exposed powerreceiving element on the frame adjacent the said mining machinesupports, and a power transmitting vmechanism between the said powerreceiving element and lbthe truck wheels comprising two independminingmachine supports.

13. In a mining machine truck, the combination of a low frame havinglongitudinally arranged mining machine supports with their up ersurfaces unobstructed, supporting wheels for the frame, an exposed'power receiving element on the frame adjacent the said mining machinesupports,.and means for transmitting power from the said power receivingelement to the truck wheels when the said element is driven and forautomatically applying a frieti'onal resistance to the rotation of thewheels when the said element is not driven, the said power transmittingmeans being positioned to leaveunobstructed the space above the miningmachine supports.

14. In a mining machine truck, the combination" of a low frame havinglongitudinally arranged mining machine supports with their uppersurfaces unobstructed, supporting wheels for the frame, an exposed powerreceiving element on the frame adjacent the said mining machinesupports, a

worm connected with the said power receivmg element to be driventhereby, a worm wheelmeshing with the worm, and power connection betweenthe worm wheel and the truck wheels comprising a friction clutch, theworm serving to lock one of the elements of the friction clutch againstrotation when the said powerA receiving element is not driven.

15. In a mining machine truck, the combination of a low frame havinglongitudinally arranged mining machine supports with their uppersurfaces unobstructed, supporting wheels for the frame, an exposed powerreceiving element on-the frame adjacent the said mining machinesupports, a

. worm connected with the said'power receiving element to be driventhereby, a worm.

wheel meshing with the worm, power connectionsvbetween the worm wheeland the truck wheels comprising a friction clutch, the worm servin tolock oneo the elements of the friction clutch against rotation when ,thesaid power receiving element is not driven, andA manually operable meansfor adjusting the pressure between the elements of the friction clutch.

16. In a mining machine truck, the combination of a low frame havinglongitudi- `nally arranged mining machine supports with their framesurfaces unobstructed, sup'- porting wheels for the frame, an exposedpower receiving element on the V'frame adjacent the said-mining machinesupports, v a 'rotatable cable reel on the truck, and a train of powertransmitting elements between the said power receiving element on p theone hand and the truck wheels and reel on the other hand comprising amanually operable clutch.

17. In a mining machine truck, the comlbination of a low frame havinglongitudinally arranged mining machine supports with their framesurfaces unobstructed, sup porting wheels for the yframe, an exposedpower receiving element on the frame adjacent the said mining machinesupports, a rotatable cable reel on the truck, and mechanism between thesaid power receiving element on the one hand and the truck wheels andreel on the other hand for transmitting power from thle said element tothe wheels and reel or foi1 applying `a manually regulable resistance tothe rotation of the wheels and reel.

18. In a Lmining machine truck, the'combination of a low frame havinglongitudinally arranged mining machine supports with their framesurfaces unobstructed, supporting wheels for the frame, an exposed powerreceiving element on the frame adjacent the said mining machinesupports, a rotatable cable reel on the truck, and means fortransmitting power from the said power receiving element to the truckwheels and reel when the said element is driven and for automaticallyapplying a frictional resistance to the rotation of the wheels and reelrwhen the said element is notdriven.

In testimony whereof I aiix my signature, in presence of two wltnesses.'

EDWIN R. MERRILL.

Witnesses:

, CHARLES J. KIENZLE,

GEO. L. ARMS.'

Copie! o! thisl patent may be obtained'tor ve cents each, byaddressingthe Commissioner of Patents, Washington, D. G.

